lang.opt (-freduced-reflection): New option.

	* lang.opt (-freduced-reflection): New option.
	* lang.c (java_post_options): Generate an error if
	-freduced-reflection used with -fjni or -findirect-dispatch.
	* java-tree.h (flag_reduced_reflection): Declare new variable.
	* boehm.c (get_boehm_type_descriptor): Indicate all pointers
	if bitmap overflows and flag_reduced_reflection set.
	* class.c (uses_jv_markobj_p): New function.
	(make_class_data): Moved generation of vtable to before
	reflection data, generate less reflection data if
	flag_reduced_reflection set.
	* gcj.texi: Document -freduced-reflection.

From-SVN: r112095

1 files changed, 8 insertions, 3 deletions

diff --git a/gcc/java/boehm.c b/gcc/java/boehm.c
index 1bfe9e5..6ea5944 100644
--- a/gcc/java/boehm.c
+++ b/gcc/java/boehm.c
@@ -1,5 +1,5 @@
 /* Functions related to the Boehm garbage collector.
-   Copyright (C) 2000, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2003, 2004, 2006 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -184,7 +184,7 @@ get_boehm_type_descriptor (tree type)
   /* If the object is all pointers, or if the part with pointers fits
      in our bitmap, then we are ok.  Otherwise we have to allocate it
      a different way.  */
-  if (all_bits_set != -1)
+  if (all_bits_set != -1 || (pointer_after_end && flag_reduced_reflection))
     {
       /* In this case the initial part of the object is all reference
 	 fields, and the end of the object is all non-reference
@@ -193,7 +193,12 @@ get_boehm_type_descriptor (tree type)
 	 this:
 	 value = DS_LENGTH | WORDS_TO_BYTES (last_set_index + 1);
 	 DS_LENGTH is 0.
-	 WORDS_TO_BYTES shifts by log2(bytes-per-pointer).  */
+	 WORDS_TO_BYTES shifts by log2(bytes-per-pointer).
+
+         In the case of flag_reduced_reflection and the bitmap would
+         overflow, we tell the gc that the object is all pointers so
+         that we don't have to emit reflection data for run time
+         marking. */
       count = 0;
       low = 0;
       high = 0;